{"title":"超声检测在中国木材遗产保护中原位鉴定Dou组分的潜在应用","authors":"Panpan Liu , Sok Yee Yeo , Hiroatsu Fukuda","doi":"10.1016/j.conbuildmat.2025.143880","DOIUrl":null,"url":null,"abstract":"<div><div>In ancient Chinese timber architecture, the <em>Dou</em> component plays a critical role in vertical load transfer and structural stability. Given its complex geometry and historical value, non-destructive and in-situ evaluation methods are essential for assessing its mechanical integrity. This study investigates the feasibility of using ultrasonic wave velocity to predict the vertical load-bearing capacity of full-scale <em>Dou</em> components made of Douglas fir and Mongolian Scots Pine. A total of 200 specimens were tested under cruciform-shaped and linear-shaped compression. Ultrasonic wave velocities were measured along both the longitudinal and transverse directions, and their correlations with stiffness (<em>k</em>) and proportional limit load (<em>F</em>) were analyzed using Spearman rank correlation. The results reveal that longitudinal ultrasonic wave velocity (<span><math><msub><mrow><mi>υ</mi></mrow><mrow><mi>L</mi></mrow></msub></math></span>) offers higher measurement stability and stronger predictive potential for stiffness, particularly in Douglas fir specimens. In contrast, transverse ultrasonic wave velocity (<span><math><msub><mrow><mi>υ</mi></mrow><mrow><mi>W</mi></mrow></msub></math></span>) showed weaker and less consistent correlations with mechanical parameters across both wood species. The findings highlight the influence of measurement direction, wood species, and compression shapes on predictive performance and provide a technical foundation for developing non-destructive evaluation strategies for traditional timber structures. However, due to sample size limitations, future research is needed to refine the statistical models and assess the performance of aged <em>Dou</em> components.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"497 ","pages":"Article 143880"},"PeriodicalIF":8.0000,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The potential application of ultrasonic testing in the in-situ assessment of Dou components in Chinese timber heritage conservation\",\"authors\":\"Panpan Liu , Sok Yee Yeo , Hiroatsu Fukuda\",\"doi\":\"10.1016/j.conbuildmat.2025.143880\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In ancient Chinese timber architecture, the <em>Dou</em> component plays a critical role in vertical load transfer and structural stability. Given its complex geometry and historical value, non-destructive and in-situ evaluation methods are essential for assessing its mechanical integrity. This study investigates the feasibility of using ultrasonic wave velocity to predict the vertical load-bearing capacity of full-scale <em>Dou</em> components made of Douglas fir and Mongolian Scots Pine. A total of 200 specimens were tested under cruciform-shaped and linear-shaped compression. Ultrasonic wave velocities were measured along both the longitudinal and transverse directions, and their correlations with stiffness (<em>k</em>) and proportional limit load (<em>F</em>) were analyzed using Spearman rank correlation. The results reveal that longitudinal ultrasonic wave velocity (<span><math><msub><mrow><mi>υ</mi></mrow><mrow><mi>L</mi></mrow></msub></math></span>) offers higher measurement stability and stronger predictive potential for stiffness, particularly in Douglas fir specimens. In contrast, transverse ultrasonic wave velocity (<span><math><msub><mrow><mi>υ</mi></mrow><mrow><mi>W</mi></mrow></msub></math></span>) showed weaker and less consistent correlations with mechanical parameters across both wood species. The findings highlight the influence of measurement direction, wood species, and compression shapes on predictive performance and provide a technical foundation for developing non-destructive evaluation strategies for traditional timber structures. However, due to sample size limitations, future research is needed to refine the statistical models and assess the performance of aged <em>Dou</em> components.</div></div>\",\"PeriodicalId\":288,\"journal\":{\"name\":\"Construction and Building Materials\",\"volume\":\"497 \",\"pages\":\"Article 143880\"},\"PeriodicalIF\":8.0000,\"publicationDate\":\"2025-10-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Construction and Building Materials\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0950061825040310\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Construction and Building Materials","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0950061825040310","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
The potential application of ultrasonic testing in the in-situ assessment of Dou components in Chinese timber heritage conservation
In ancient Chinese timber architecture, the Dou component plays a critical role in vertical load transfer and structural stability. Given its complex geometry and historical value, non-destructive and in-situ evaluation methods are essential for assessing its mechanical integrity. This study investigates the feasibility of using ultrasonic wave velocity to predict the vertical load-bearing capacity of full-scale Dou components made of Douglas fir and Mongolian Scots Pine. A total of 200 specimens were tested under cruciform-shaped and linear-shaped compression. Ultrasonic wave velocities were measured along both the longitudinal and transverse directions, and their correlations with stiffness (k) and proportional limit load (F) were analyzed using Spearman rank correlation. The results reveal that longitudinal ultrasonic wave velocity () offers higher measurement stability and stronger predictive potential for stiffness, particularly in Douglas fir specimens. In contrast, transverse ultrasonic wave velocity () showed weaker and less consistent correlations with mechanical parameters across both wood species. The findings highlight the influence of measurement direction, wood species, and compression shapes on predictive performance and provide a technical foundation for developing non-destructive evaluation strategies for traditional timber structures. However, due to sample size limitations, future research is needed to refine the statistical models and assess the performance of aged Dou components.
期刊介绍:
Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged.
Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.